Tecnifibre X-One Biphase - String Reel age-8-and-under PolyTour Fire is a string

PolyTour Fire is a string that is designed for big hitters looking for lots of control

the QST 36 Foam is perfect for indoor court settings

Colour: Heather Grey

5cm and Length 39”

formerly known as Babolat Powergy

Tecnifibre X-One Biphase - String Reel age-8-and-under PolyTour Fire is a stringAccording to Tecnifibre, the X One Biphase string uses High Heat Capacity (H2C) fibers, which allows the use of an innovative chemical treatment process called Trimerization. This new process increases the cohesion between chemical molecule links through extreme variations in temperature to result in ultimate dynamic efficiency (power) and exceptional feel. The new patented Biphasic process, with its visible marks on the string, extends string life by